NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
237 reportsClear category filter60,000 miles · Nov 30, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING 25 MPH, HE APPLIED THE BRAKES AND THE PEDAL EXTENDED TO THE FLOOR. THE CONTACT WAS ONLY ABLE TO ALLOW THE VEHICLE TO COAST UNTIL IT CAME TO A STOP. THE VEHICLE WAS TOWED TO AN INDEPENDENT REPAIR SHOP WHERE HE WAS INFORMED THAT THE BRAKE LINES …
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TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING 25 MPH, HE APPLIED THE BRAKES AND THE PEDAL EXTENDED TO THE FLOOR. THE CONTACT WAS ONLY ABLE TO ALLOW THE VEHICLE TO COAST UNTIL IT CAME TO A STOP. THE VEHICLE WAS TOWED TO AN INDEPENDENT REPAIR SHOP WHERE HE WAS INFORMED THAT THE BRAKE LINES WERE CORRODED. THE BRAKE LINES WERE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE, BUT OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS 60,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10437832
131,792 miles · Nov 28, 2011
Parking BrakeService Brakes, Hydraulic
I WAS TRAVELING WEST BOUND IN THE CENTER LANE OF INTERSTATE 50 AT APPROXIMATELY 55 MILES PER HOUR WHEN ANOTHER VEHICLE ABRUPTLY CHANGED LANES IN FRONT OF ME WHILE CROSSING THE SEVERN RIVER BRIDGE IN MARYLAND. I ABRUPTLY APPLIED MY BRAKES AND THE PEDAL WENT TO THE FLOOR. THERE WAS A TOTAL LOSS OF THE MAIN AND EMERGENCY BRAKE…
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I WAS TRAVELING WEST BOUND IN THE CENTER LANE OF INTERSTATE 50 AT APPROXIMATELY 55 MILES PER HOUR WHEN ANOTHER VEHICLE ABRUPTLY CHANGED LANES IN FRONT OF ME WHILE CROSSING THE SEVERN RIVER BRIDGE IN MARYLAND. I ABRUPTLY APPLIED MY BRAKES AND THE PEDAL WENT TO THE FLOOR. THERE WAS A TOTAL LOSS OF THE MAIN AND EMERGENCY BRAKES. I WAS ABLE TO SAFELY DOWN SHIFT AND COAST TO THE SHOULDER. UPON INSPECTION, I FOUND A BRAKE LINE UNDER THE CABIN AND UNDER THE DRIVERS SEAT HAD CORRODED AND BROKEN AT THE HANGER AND BRAKE FLUID WAS DRAINING FROM THE LINE. *KB
NHTSA ODI #10437629
121,275 miles · Nov 24, 2011
Service Brakes, Hydraulic
I WAS BACKING MY TRUCK UP AT A BOAT LAUNCH WHEN I APPLIED MY BRAKES AND STILL KEPT GOING ALMOST RUNNING OVER MY HUNTING PARTNER. I PULLED THE TRAILER OUT AND EVERYTHING SEEMED NORMAL. WHILE GOING HOME LATER THAT DAY I WAS GOING DOWN A SLIGHT HILL WHEN I HIT MY BRAKES AND PEDAL WENT TO FLOOR. BRAKE WARNING LIGHT THEN CAME ON. I …
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I WAS BACKING MY TRUCK UP AT A BOAT LAUNCH WHEN I APPLIED MY BRAKES AND STILL KEPT GOING ALMOST RUNNING OVER MY HUNTING PARTNER. I PULLED THE TRAILER OUT AND EVERYTHING SEEMED NORMAL. WHILE GOING HOME LATER THAT DAY I WAS GOING DOWN A SLIGHT HILL WHEN I HIT MY BRAKES AND PEDAL WENT TO FLOOR. BRAKE WARNING LIGHT THEN CAME ON. I FOUND THE FLUID WAS LOW AND THEN FILLED IT UP. AT HOME I SAW BRAKE FLUID LEAKING OUT FROM UNDER MY TRUCK LIKE A SIEVE. MY GARAGE INFORMED ME MY BRAKE LINES ARE ALL EATEN UP BY RUST - THOUGH TRUCK WAS UNDERCOATED. I NEED TO REPLACE THE LINES. *TR
NHTSA ODI #10436935
102,475 miles · Nov 21, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE HAULING A TRAILER AT 30 MPH AND ATTEMPTING TO BRAKE, THE BRAKE PEDAL WAS DEPRESSED INTO THE FLOORBOARD. THE CONTACT WAS ABLE TO BRING THE VEHICLE TO STOP BY APPLYING THE TRAILER BRAKE CONTROL. THE CONTACT EXAMINED THE VEHICLE AND FOUND THAT THE B…
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TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE HAULING A TRAILER AT 30 MPH AND ATTEMPTING TO BRAKE, THE BRAKE PEDAL WAS DEPRESSED INTO THE FLOORBOARD. THE CONTACT WAS ABLE TO BRING THE VEHICLE TO STOP BY APPLYING THE TRAILER BRAKE CONTROL. THE CONTACT EXAMINED THE VEHICLE AND FOUND THAT THE BRAKE LINE ON TOP OF THE ENGINE FRAME WAS CORRODED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND THE CURRENT MILEAGE WAS 102,475.
NHTSA ODI #10436536
94,642 miles · Nov 9, 2011
Service Brakes, HydraulicSuspension
I'VE HAD TO REPLACE ALL MY BRAKE COMPONENTS SUCH AS, ROTORS, CALIPERS, BRAKE LINES, BACKING PLATES, ALSO THE REAR LEAF SPRING SHACKLES HAD TO BE REPLACED AND WELDED IN ALL DUE TO METAL CORROSION OR RUST. NOW MY LATEST PROBLEM IS THE REAR SHOCK MOUNTS HAVE BROKEN DUE TO RUST SO NOW MY SHOCKS ARE JUST DANGLING AROUND NOT DOING ANY…
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I'VE HAD TO REPLACE ALL MY BRAKE COMPONENTS SUCH AS, ROTORS, CALIPERS, BRAKE LINES, BACKING PLATES, ALSO THE REAR LEAF SPRING SHACKLES HAD TO BE REPLACED AND WELDED IN ALL DUE TO METAL CORROSION OR RUST. NOW MY LATEST PROBLEM IS THE REAR SHOCK MOUNTS HAVE BROKEN DUE TO RUST SO NOW MY SHOCKS ARE JUST DANGLING AROUND NOT DOING ANYTHING TO PREVENT ME FROM GETTING INTO AN ACCIDENT. BUT IT DOESN'T STOP THERE, THE REAR CROSSMEMBER THAT GOES FROM ONE END OF THE FRAME TO THE OTHER IS ALSO ROTTED THROUGH SO NOW I CAN'T EVEN REPAIR THE SHOCK MOUNTS BECAUSE THEY MOUNT TO THIS CROSSMEMBER WHICH IS NOW A PIECE OF ROTTED METAL! I CAN'T BELIEVE HOW FAST THIS TRUCK HAS ROTTED THROUGH, I HAVE A 1984 PONTIAC GRAND PRIX AND I HAVE NEVER HAD TO CHANGE OR REPLACE ANY OF THESE PARTS BECAUSE OF RUST. I HAVE READ THAT GM HAD USED CHEAPER METAL FROM CHINA ON THEIR MODEL TRUCKS FROM 1999-2004 AND DIDN'T STOP USING THEM UNTIL ALL OF THE COMPLAINTS STARTED TO SURFACE. WHY DOESN'T GM TAKE RESPONSIBILITY FOR THE USE OF SHODDY MATERIALS AND COMPENSATE ALL THE HARD WORKING PEOPLE WHO HAVE PURCHASED THEIR TRUCKS FOR THESE YEARS!!!!!! *TR
NHTSA ODI #10435029
98,000 miles · Nov 8, 2011
Service Brakes, Hydraulic
VEHICLE SUFFERS FROM LOW SPEED ABS ACTIVATION, BRAKE LINES RUPTURED FROM CORROSION. *TR
NHTSA ODI #10434926
128,000 miles · Oct 21, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO K1500. THE CONTACT STATED THAT WHILE DRIVING AT LOW SPEEDS WITH PRESSURE APPLIED TO THE BRAKES, IT BECAME DIFFICULT FOR THE VEHICLE TO SLOW DOWN OR REDUCE SPEED. THE DEALER ADVISED THE CONTACT THAT THERE WERE NO OPEN RECALLS FOR THE VEHICLE. THE MANUFACTURER HAD NOT BEEN NOTIFIE…
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TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO K1500. THE CONTACT STATED THAT WHILE DRIVING AT LOW SPEEDS WITH PRESSURE APPLIED TO THE BRAKES, IT BECAME DIFFICULT FOR THE VEHICLE TO SLOW DOWN OR REDUCE SPEED. THE DEALER ADVISED THE CONTACT THAT THERE WERE NO OPEN RECALLS FOR THE VEHICLE. THE MANUFACTURER HAD NOT BEEN NOTIFIED NOR WAS THE VEHICLE DIAGNOSED OR REPAIRED. THE CURRENT MILEAGE WAS 130,000 AND THE APPROXIMATE FAILURE MILEAGE WAS 128,000.
NHTSA ODI #10432347
Mileage unknown · Oct 20, 2011
Service Brakes, Hydraulic
MY WIFE WAS PICKING ME UP AND THE BRAKE LIGHT CAME ON. WHEN WE GOT HOME I NOTICED THE BRAKE FLUID WAS LOW SO I FILLED IT AND THE LIGHT WENT OFF. THE BRAKE PEDAL WAS STILL SPONGY SO I GOT UNDERNEATH THE TRUCK AND HAD HER PUSH THE BRAKE PEDAL. I SAW BRAKE FLUID SQUIRT OUT OF A METAL BRAKE LINE THAT IS CORRODED ON THE DRIVERS SI…
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MY WIFE WAS PICKING ME UP AND THE BRAKE LIGHT CAME ON. WHEN WE GOT HOME I NOTICED THE BRAKE FLUID WAS LOW SO I FILLED IT AND THE LIGHT WENT OFF. THE BRAKE PEDAL WAS STILL SPONGY SO I GOT UNDERNEATH THE TRUCK AND HAD HER PUSH THE BRAKE PEDAL. I SAW BRAKE FLUID SQUIRT OUT OF A METAL BRAKE LINE THAT IS CORRODED ON THE DRIVERS SIDE REAR WHEEL. *TR
NHTSA ODI #10432276
120,000 miles · Oct 19, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT WAS DRIVING 5 MPH WHEN THE BRAKES FAILED TO WORK PROPERLY WITH THE ILLUMINATION OF THE BRAKE WARNING LIGHT. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSIS AND THE MANUFACTURER WAS NOT CONTACTED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGES…
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TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT WAS DRIVING 5 MPH WHEN THE BRAKES FAILED TO WORK PROPERLY WITH THE ILLUMINATION OF THE BRAKE WARNING LIGHT. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSIS AND THE MANUFACTURER WAS NOT CONTACTED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 120,000. UPDATED 11/16/11*LJ THE CONSUMER STATED THE BRAKE PEDAL WENT TO THE FLOOR. T HE VEHICLE SLOWED DOWN. BUT DID NOT STOP UNTIL IT ENTERED THE STREET. THE BRAKE WARNING LIGHT ILLUMINATED. THE CONSUMER STATED THERE WAS A GREAT INCREASE IN STOPPING DISTANCE. THE CONSUMER FOUND THE BRAKE MASTER CYLINDER LEAKING AND THE RESERVOIR WAS COMPLETELY EMPTY. THE BRAKE LINE HAD RUPTURED. UPDATED 02/06/12
NHTSA ODI #10430831
108,672 miles · Oct 18, 2011
Service Brakes, Hydraulic
MY 2000 CHEVY SILVERADO 1500 THAT I PURCHASED NEW AND NOW HAVE 109,000 MILES ON IT AND HAS ALWAYS BEEN GARAGED. THE BRAKES HAVE FAILED ON ME 3 DIFFERENT TIMES DUE TO CORROSION TO THE BRAKE LINES THAT RUSTED THROUGH. I HAVE HAD THE FRONT BRAKE LINES REPLACED ONCE IN 2008 AND THE REAR BRAKE LINES REPLACED TWICE IN 2009 & 2011. THE…
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MY 2000 CHEVY SILVERADO 1500 THAT I PURCHASED NEW AND NOW HAVE 109,000 MILES ON IT AND HAS ALWAYS BEEN GARAGED. THE BRAKES HAVE FAILED ON ME 3 DIFFERENT TIMES DUE TO CORROSION TO THE BRAKE LINES THAT RUSTED THROUGH. I HAVE HAD THE FRONT BRAKE LINES REPLACED ONCE IN 2008 AND THE REAR BRAKE LINES REPLACED TWICE IN 2009 & 2011. THE 3 TIMES EITHER MY WIFE WAS DRIVING OR I WAS WHEN THE BRAKES FAILED, LUCKILY WE WERE ABLE TO GET THE VEHICLE TO SLOW DOWN ENOUGH TO PULL OFF INTO A FIELD OR BREAKDOWN LANE OF THE HIGHWAY AVOIDING A SERIOUS ACCIDENT. 2010 HAD THE REAR SHACKLE BRACKET REPLACE BECAUSE OF CORROSION THAT RUSTED THROUGH AND IN 2011 HAD TO HAVE THE TRANSMISSION COOLER LINES REPLACED DUE TO CORROSION.THE FRAME HAS ALOT OF CORROSION AND ONE OF THE CROSS BARS IS RUSTED THROUGH. I HAVE OWNED DIFFERENT VEHICLES OVER 44 YEARS AND I ALWAYS DROVE MY VEHICLES FOR 10 OR MORE YEARS BEFORE GETTING A NEW ONE AND NEVER HAD A VEHICLE THAT HAD BRAKE LINES RUST THROUGH AND WITH THIS MUCH UNDERCARRIAGE CORROSION. *TR
NHTSA ODI #10430623
NHTSA investigations
2EA04011 · Parking Brake Failure
Opened Apr 9, 2004 · Closed May 10, 2005
Status: closed (inferred from source dates) · Parking Brake; Parking Brake:conventional; Parking Brake:conventional:mechanical; Parking Brake:conventional:mechanical:linkage And Cable
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Additional source detail variants (4)
Parking Brake:conventional
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Parking Brake:conventional:mechanical
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Parking Brake:conventional:mechanical:linkage And Cable
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Parking Brake
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
PE03057 · Parking Brake Failure
Opened Dec 8, 2003 · Closed Apr 9, 2004
Status: closed (inferred from source dates) · Parking Brake
ODI OPENED PE03-057 TO ASSESS PARKING BRAKE INEFFECTIVENESS IN THE SUBJECT VEHICLES.THESE VEHICLES ARE EQUIPPED WITH FOUR WHEEL DISC BRAKES THAT INCORPORATE A SINGLE-SHOE DRUM-IN-HAT PARKING BRAKE INDEPENDENT OF THE SERVICE BRAKES.COMPLAINT AND WARRANTY DATA INDICATE THAT THE PARKING BRAKE LININGS TEND TO WEAR OUT EARLY IN THE LIFE OF THE VEHICLE (AT AN AVERAGE OF 24 MONTHS IN SERVICE), REDUCING THE PARKING BRAKE SYSTEM'S TORQUE BELOW THAT NEEDED TO IMMOBILIZE THE VEHICLE.GM HAS ATTRIBUTED THIS ACCELERATED WEAR TO FOREIGN MATERIAL INTRUSION AND A FAILURE OF THE BRAKE SHOE TO PROPERLY SELF-CENTER WITHIN ITS BRAKE DRUM.EFFECTIVE WITH THE START OF MY 2003 PRODUCTION, A NEWER REDUCED FORCE HOLD-DOWN CLIP WAS INTRODUCED TO FACILITATE BRAKE SHOE DISENGAGEMENT FROM THE DRUM SURFACE.THIS PART IS ALSO AVAILABLE AT THE SERVICE LEVEL FOR THE MY 1999-2002 VEHICLES.GM HAS INDICATED THAT THE PAKING BRAKE IS INTENDED TO OPERATE IN CONJUNCTION WITH THE TRANSMISSION TO IMMOBILZE PARKED VEHICLES, AND THAT IN MANY CASES, ACCELERATED PARKING BRAKE LINING WEAR IS CAUSED BY ROUGH USE, VEHICLE MODIFICATIONS, AND DRIVING WITH THE PARKING ENGAGED. ODI HAS UPGRADED THE PRELIMINARY EVALUATION TO AN ENGINEERING ANALYSIS TO GATHER FURTHER INFORMATION CONCERNING PARKING BRAKE USAGE FACTORS AND THE CIRCUMSTANCES SURROUNDING THE SEVENTEEN REPORTED VEHICLE CRASHES.
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